我如何改变CMakeLists。在Clion中，txt通常是指每个项目?

I would like to have this code in every CMakeLists.txt which will be generated by every new poject: set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Werror -Wall"). Now I have to add this code to evey new project. Thanks for help everyone.I would like to have this code in every CMakeLi